Use defaultValue annotation

cli/src/main/java/bio/terra/pfb/JavaPfbCommand.java

@@ -27,8 +27,6 @@ public class JavaPfbCommand implements Runnable {
       description =
           "[OPTIONAL] Option to run for given command (Options include: schema, metadata, nodes. If not defined for the show command, the row data will be returned.)",
       defaultValue = "tableRows")
-  private PfbCommandOption option = TABLE_ROWS;
-
   @Option(
       names = {"-i", "--input"},
       description = "Input file value")
@@ -38,8 +36,9 @@ public class JavaPfbCommand implements Runnable {
       names = {"-n", "--limit"},
       description =
           "How many records to show, ignored for sub-commands.\n"
-              + "                        [default: no limit]")
-  private int limit = -1;
+              + "                        [default: no limit]",
+      defaultValue = "-1")
+  private int limit;
 
   public static void main(String[] args) {
     int exitCode = executeCommand(args);